Even for us in this industry, it's easy to take for granted running water and toilets. We all know that a lot of work goes into building and maintaining our systems (that's what we do every day) but 95% of the time it works when we need it. This TED talk reminds us of how important this work is, and how lucky we are to have such advanced systems. Even basic sanitation makes lives so much better. Favorite quote: "Sanitation is more about dignity than human disposal of waste."